Traction-wheel mounting.



A. KUEHN.

TRACTION WHEEL MOUNTING.

APPLICATION FILED JULY 10, 1912.

1,063,978. Patented June 10, 1913.

Sum/MM COLUMBIA PLANOCMPH co., WAMHNOTON. D. c.

UNTTED $TATES 1 @FFTQE.

ALFRED KUEHN, OF CHICAGO, ILLINOIS.

TRACTION-WHEEL MOUNTING.

T0 (ZZZ 107mm, 2'15 may concern,

Be it known that I, Amumn KUn'nN, a subject of the Emperor of (iermany,and a resident of the city of Chicago, in the county of Cook and Stateof Illinois, United States of America, have invented certain new and.useful Improvemtuits in Traction-lVheel Mountings, of which thefollowing is a specification.

My invention relates particularly to it'orked-frame bicycles and likevehicles having a spring-carried traction wheel mounting in connectionwith a rigid frame construction, such as is set forth in my pendingapplication Ser. No. (371,611?) tiled January 7th, 1912; and it consistsin certain improvements in this type of machine which are fullydescribed in connection with the accompanying drawings and specificallypointed out in the subjoined. claims.

Figure 1 is a side elevation of the rear portion of the forked frame ofa bicycle or tricycle showing my improved connection of thespring-controlled swinging wheel carriers thereto and aclutch-controlled twospeed operating gear for the traction wheel axle.Fig. 2 is mainly a cross-sectional View on the line 2 2 of Fig. 1; thepedal drive side being a full top view. I igs. 3 and +t are separateviews respectively of the adjustably-connet-ted terminal ring and ot theswingingly mounted wheel carrier.

Each member of the rear trame :lorl; oi the bicycle frame indicated, ismade up of angularly arranged bars 3 and t the converging ends of whichare rigidly joined to a segmental shaped :tork terminal 5. This fixedterminal 5 is adapted for the adjustable attachment thereto of aseparate terminal ring 10 in which the swinging wheel carrier ispivotally mounted. This separate terminal ring 10, as shown, is providedwith a projecting pivot ear 11 which is secured by a bolt 12 to theupper portion of the rigid for]: terminal 5, and also with a clampingcar 13 which is adj ustably secured to the lower portion of saidterminal 5; this adjustable connection being etl'ected in the particularconstruction indicattal by means of a clamping bolt 14. slidably engagedin a slot 15 ot the terminal 5, which bolt is tightened to fix the ringafter the latter has been swung upon its pivotal connection 11 by asuitable set screw 16 to desired position relative to the terminal 5.

Specification of Letters Patent.

Application filed July 19, 1912.

Iiatented June 10, 1913 Serial No. 710,379.

Each wheel carrier (lll'lPl'lSOS a cylindrical portion 20 which isrotatably mounted in the correspmnling adjustably lixed terminal ring10; and an extension 21. having an axle bearing 22 eccentric to thepivotal axis oil. the portion 20, so that the traction wheel axle 2:")which is engaged in said bearing 22 will be swung around said axis at asuitable distance there'lirom as in my prior constrnctiio-n referred to.The terminal ring 10 is split aml provided with an adjusting bolt 26 toinsure proper tit of the rotatable wheel carrier portion 520. The latteris provided with a centrally mounted shaft; 30 having fixed thereto, asshown, a. relatively large diameter chain wheel 31. for the main drivechain 32 and a smaller chain wheel 38 for a lower-speed drive; thetraction wheel axle 535 having loosely mounted thereon coacting chainwheels 35 and 36 respectively, one or other of which may be renderedoperative as desired by means o'l a dog clutch 237 which is adjusted bysuitable shitting levers 38, 39.

The tension of the low speed chain 34L may be regulated by adjusting theaxle 25 as usual, while the tension oil the main drive chain 32 isregulated imlependently by properly setting the pivotally connected.terminal ring it) as already described.

The swing of the wheel carriers upon their pivotal axis 20, iscontrolled, as shown, by a longitudinally arranged leal spring 45; themid 'ay portion of this spring be ing pivotally connected at 4:6 to alixed point 47 ot the upper portion of the frame, while the Front end tothereol is pivotally connected to a point 4-9 oi the frame, by links 50,and the rear end at thereof is similaa'ly connected by long linlts 52 topivot ears 5; at the tree end oi. the wheel carriers. The swing of thelatter, as varying strains are brought upon the traction wheel by roadobstructions, is thus controlled so as to reduce the shock to mini mum,while the location and action of the spring is most; advantageous.

\Vhat I claim is:--

1. In a traction wheel mounting for vehicles comprising a frame 'lork'having spring controlled swinging wheel carriers pivotally ctmnectedthereto and a traction wheel axle wcentrically mounted in said carriers,a terminal pivot ring For each of said carriers pivotally connected tosaid frame fork and means for adjustably fixing said ring to the latter.

2. In a traction wheel mounting for vehicles, a frame fork having rigidsegmental terminals, adjustable terminal rings having pivotal andadjusting connections to said rigid terminals, and spring controlledswinging Wheel carriers pivotally mounted in said rings and providedwith a concentric drive-wheel shaft and eccentrically arrangedtraction-wheel axle supports.

3. In a traction wheel mounting for vehicles having a forked frame,swinging wheel carriers pivotally connected thereto, and a tractionWheel axle eccentrically mounted in said carriers, a longitudinallyarranged plate spring pivotally connected intermediately and at an endto said frame and having a link connection at the other .end to saidswinging carriers.

4:. In a traction wheel mounting for vehicles having a forked frame,spring controlled swinging wheel carriers pivotally connected to saidframe fork, a tract-ion wheel axle eccentrically mounted in saidcarriers, a drive Wheel shaft concentric with said pivotal connection ofthe wheel carriers, and a clutch controlled operating gear connectingsaid drive wheel shaft and axle.

In testimony whereof, I affix my signature, in the presence of twowitnesses.

ALFRED KUEHN.

lVitnesses C. E. CURRY, JAMES P. GERING.

Copies 01 this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

